The Intel 4040microprocessor was the successor to the Intel 4004. It was introduced in 1974. The 4040 employed a 10 μm silicon-gate enhancement load PMOS technology, was made up of 3,000 transistors [ [http://www.cpu-collection.de/?l0=co&l1=Intel&l2=4040 cpu-collection.de >> Intel >> 4040 ] ] and could execute approximately 60,000 instructions per second.